/* ===========================================================
   Virkode Limited — Software & AI
   Tokens
=========================================================== */
:root{
  --bg:            #08090d;
  --bg-raised:     #0f1119;
  --bg-raised-2:   #14161f;
  --line:          rgba(243,243,246,0.09);
  --line-strong:   rgba(243,243,246,0.16);
  --text:          #f3f3f6;
  --text-dim:      #9497ab;
  --text-dimmer:   #63667a;
  --violet:        #7c5cfc;
  --cyan:          #4fd1ff;
  --amber:         #ffb454;
  --grad:          linear-gradient(100deg, var(--violet), var(--cyan));

  --display: "Space Grotesk", "Arial Narrow", sans-serif;
  --body:    "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, monospace;

  --container: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
.wrap{ max-width:var(--container); margin:0 auto; padding:0 32px; }

::selection{ background:var(--violet); color:#fff; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- background field ---------- */
.field{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 10%, transparent 75%);
  opacity:0.5;
}

/* ---------- nav ---------- */
header.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(8,9,13,0.72);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--container); margin:0 auto; padding:18px 32px;
  display:flex; align-items:center; justify-content:space-between;
}
.nav-logo img{ height:26px; width:auto; }
.logo-text{ display:flex; flex-direction:column; line-height:1; }
.logo-text .lt-main{
  font-family:var(--display); font-weight:700; font-size:20px; letter-spacing:-0.01em; color:var(--text);
}
.logo-text .lt-main .lt-v{ background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.logo-text .lt-sub{
  font-family:var(--mono); font-size:9.5px; letter-spacing:.22em; text-transform:uppercase; color:var(--text-dimmer);
  margin-top:3px;
}
footer .logo-text .lt-main{ font-size:22px; }
.nav-links{ display:flex; align-items:center; gap:36px; }
.nav-links a{
  font-family:var(--mono); font-size:13px; letter-spacing:0.02em;
  color:var(--text-dim); transition:color .2s ease;
}
.nav-links a:hover, .nav-links a:focus-visible{ color:var(--text); }
.nav-cta{
  border:1px solid var(--line-strong); padding:9px 18px; border-radius:2px;
  font-family:var(--mono); font-size:12.5px; color:var(--text) !important;
  transition:border-color .2s ease, background .2s ease;
}
.nav-cta:hover{ border-color:var(--cyan); background:rgba(79,209,255,0.06); }
.nav-toggle{
  display:none; background:none; border:1px solid var(--line-strong); border-radius:2px;
  width:38px; height:38px; padding:0; cursor:pointer; align-items:center; justify-content:center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width:16px; height:1.5px; background:var(--text); position:relative; transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle span::before{ position:absolute; top:-5px; }
.nav-toggle span::after{ position:absolute; top:5px; }
.nav-toggle[aria-expanded="true"] span{ background:transparent; }
.nav-toggle[aria-expanded="true"] span::before{ top:0; transform:rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after{ top:0; transform:rotate(-45deg); }

/* ---------- hero ---------- */
.hero{
  position:relative; z-index:1;
  padding:120px 0 96px;
  overflow:hidden;
}
.hero-inner{ position:relative; z-index:2; }
.eyebrow{
  font-family:var(--mono); font-size:12.5px; letter-spacing:0.14em; text-transform:uppercase;
  color:var(--cyan); display:flex; align-items:center; gap:10px; margin-bottom:28px;
}
.eyebrow::before{
  content:""; width:7px; height:7px; background:var(--grad); display:inline-block;
  animation:pulse 2.2s ease-in-out infinite;
}
@keyframes pulse{ 0%,100%{opacity:1; transform:scale(1);} 50%{opacity:.4; transform:scale(0.7);} }

h1.headline{
  font-family:var(--display); font-weight:600;
  font-size:clamp(38px, 6vw, 74px); line-height:1.03; letter-spacing:-0.01em;
  max-width:920px; margin:0 0 28px;
}
h1.headline .accent{
  background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero-sub{
  font-size:19px; color:var(--text-dim); max-width:560px; margin:0 0 40px;
  font-weight:400;
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; align-items:center; }

.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--mono); font-size:13.5px; letter-spacing:0.02em;
  padding:14px 26px; border-radius:2px; cursor:pointer; border:1px solid transparent;
  transition:transform .2s ease, background .2s ease, border-color .2s ease;
}
.btn-primary{ background:var(--text); color:var(--bg); }
.btn-primary:hover{ transform:translateY(-2px); }
.btn-ghost{ border-color:var(--line-strong); color:var(--text); }
.btn-ghost:hover{ border-color:var(--cyan); color:var(--cyan); }

/* signature: V-beacon */
.beacon{
  position:absolute; top:0; right:-6%; width:640px; height:640px; z-index:1;
  opacity:0.9; pointer-events:none;
}
@media (max-width:900px){ .beacon{ display:none; } }

/* ---------- section shell ---------- */
section{ position:relative; z-index:1; padding:100px 0; }
.section-head{ max-width:640px; margin-bottom:56px; }
.section-tag{
  font-family:var(--mono); font-size:12px; letter-spacing:0.14em; text-transform:uppercase;
  color:var(--text-dimmer); margin-bottom:14px; display:block;
}
h2.section-title{
  font-family:var(--display); font-weight:600; font-size:clamp(28px,3.4vw,42px);
  letter-spacing:-0.01em; margin:0 0 16px;
}
.section-desc{ color:var(--text-dim); font-size:17px; max-width:520px; }

.divider{ border:none; border-top:1px solid var(--line); margin:0; }

/* ---------- capability cards ---------- */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.cap-card{
  background:var(--bg); padding:40px 34px; transition:background .25s ease;
}
.cap-card:hover{ background:var(--bg-raised); }
.cap-num{ font-family:var(--mono); color:var(--text-dimmer); font-size:13px; margin-bottom:28px; display:block; }
.cap-icon{ width:34px; height:34px; margin-bottom:22px; color:var(--cyan); }
.cap-title{ font-family:var(--display); font-size:21px; font-weight:600; margin:0 0 12px; }
.cap-desc{ color:var(--text-dim); font-size:15px; line-height:1.65; }
@media (max-width:860px){ .grid-3{ grid-template-columns:1fr; } }

/* ---------- approach / process ---------- */
.approach-list{ display:flex; flex-direction:column; }
.approach-row{
  display:grid; grid-template-columns:90px 1fr 1fr; gap:24px; align-items:start;
  padding:32px 0; border-top:1px solid var(--line);
}
.approach-row:last-child{ border-bottom:1px solid var(--line); }
.approach-idx{ font-family:var(--mono); color:var(--violet); font-size:14px; }
.approach-name{ font-family:var(--display); font-size:22px; font-weight:600; }
.approach-copy{ color:var(--text-dim); font-size:15px; }
@media (max-width:760px){
  .approach-row{ grid-template-columns:1fr; gap:10px; }
}

/* ---------- stack / stats strip ---------- */
.stats-strip{
  display:grid; grid-template-columns:repeat(4,1fr); border:1px solid var(--line);
}
.stat{ padding:32px 28px; border-left:1px solid var(--line); }
.stat:first-child{ border-left:none; }
.stat-num{ font-family:var(--display); font-size:34px; font-weight:600; }
.stat-label{ font-family:var(--mono); font-size:11.5px; color:var(--text-dim); text-transform:uppercase; letter-spacing:.08em; margin-top:8px; }
@media (max-width:760px){ .stats-strip{ grid-template-columns:repeat(2,1fr); } .stat{ border-left:none; border-top:1px solid var(--line);} }

/* ---------- cta ---------- */
.cta{
  border:1px solid var(--line); padding:72px 56px; text-align:left; position:relative; overflow:hidden;
  background:linear-gradient(180deg, var(--bg-raised), var(--bg));
}
.cta h2{ font-family:var(--display); font-size:clamp(26px,3.6vw,40px); font-weight:600; max-width:640px; margin:0 0 18px; }
.cta p{ color:var(--text-dim); max-width:480px; margin:0 0 32px; }
.cta-mail{ font-family:var(--mono); color:var(--cyan); font-size:15px; }
@media (max-width:640px){ .cta{ padding:48px 26px; } }

/* ---------- footer ---------- */
footer{
  position:relative; z-index:1; border-top:1px solid var(--line); padding:52px 0 34px;
}
.footer-top{ display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:32px; margin-bottom:40px; }
.footer-logo{ margin-bottom:14px; display:inline-flex; }
.footer-loc{ color:var(--text-dimmer); font-size:13.5px; line-height:1.8; }
.footer-cols{ display:flex; gap:64px; flex-wrap:wrap; }
.footer-col h4{ font-family:var(--mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.08em; color:var(--text-dimmer); margin:0 0 16px; font-weight:400; }
.footer-col a{ display:block; font-size:14.5px; color:var(--text-dim); margin-bottom:10px; transition:color .2s ease; }
.footer-col a:hover{ color:var(--text); }
.edu-link{
  display:inline-flex; align-items:center; gap:8px; margin-top:2px;
  color:var(--text-dim) !important; border-bottom:1px solid transparent;
}
.edu-link:hover{ color:var(--text) !important; border-color:var(--line-strong); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px;
  padding-top:26px; border-top:1px solid var(--line);
  font-family:var(--mono); font-size:12px; color:var(--text-dimmer);
}

/* ---------- reveal ---------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }

@media (max-width:760px){
  .nav-toggle{ display:flex; }
  .nav-links{
    display:none; position:absolute; top:100%; left:0; right:0; flex-direction:column; align-items:stretch;
    gap:0; background:var(--bg); border-bottom:1px solid var(--line); padding:8px 32px 20px;
  }
  .nav-links.open{ display:flex; }
  .nav-links a{ padding:14px 0; border-top:1px solid var(--line); }
  .nav-links a:first-child{ border-top:none; }
  .nav-cta{ margin-top:8px; text-align:center; }
  .hero{ padding:88px 0 64px; }
}